Oculogryphus shuensis, Jeng, Ming-Luen & Engel, Michael S., 2014

Jeng, Ming-Luen & Engel, Michael S., 2014, Description of Oculogryphus shuensis sp. n. (Coleoptera, Lampyridae), the first species of the genus in the Sino-Japanese realm, with a modified key to the subfamily Ototretinae, ZooKeys 378, pp. 41-47 : 42-44

Oculogryphus shuensis sp. n. Figs 1-5

Holotype.

♂, "CHINA: Sichuan Province/ Chongqing City, Jijiang Distr./ Shuikousi, by net/ 24.VI.2013/ YT Wang leg.

Paratype.

1 ♂, "CHINA: Sichuan Province/ Chongqing City, Jiangjin Distr./ Dawopu, by FIT/, 22.VI.2013/ YT Wang leg.

Type-locality.

China, Sichuan Province, Chongqing City, Jijiang Distr., Shuikousi, 18°22'N, 106°13'E.

Diagnosis.

In comparison with the other two documented species, Oculogryphus shuensis sp. n. more closely resembles Oculogryphus bicolor Jeng, Engel et Branham than it does Oculogryphus fulvus Jeng. For example, the new species has a broader elytral epipleura, more slender metatibia, and more elongate parameres, much like Oculogryphus bicolor . The new species can be differentiated easily from the others by its highly contrasting bicoloration on the dorsum (Fig. 1) and black abdominal ventrites 1-5 (Fig. 2). It additionally differs from Oculogryphus bicolor by having a subparallel-sided median lobe of the aedeagus and a strongly sinuate basal margin to the parameres in lateral aspect (Fig. 5).

Description.

♂: BL: 6.7-7.1 mm; BW: 2.8-3.1 mm; PW/PL = 1.5-1.6; EL/ EW = 3.4-3.7; EL/PL = 3.7-3.9; BW/PW = 1.3-1.4. The species is very similar to Oculogryphus bicolor in general morphology and those characteristics need not be repeated here (vide Description of Oculogryphus bicolor in Jeng et al. 2011). As described for Oculogryphus fulvus and Oculogryphus bicolor except: head capsule and antennae black; pronotum and mesoscutellum orange; elytra and epipleura opaquely black except humeri brown; thoracic sternites yellowish brown; all coxae, trochanters and subapices of femora yellowish brown, other parts of legs otherwise black; abdominal ventrites 1-5 and basal half of 6 opaquely black, apical half of 6 and 7-8 yellowish brown. Venation of hind wing (Fig. 3) similar to that of Oculogryphus fulvus , with MP4 absent or faint. Aedeagal sheath about 0.89 mm in length and 0.42 mm in width; abdominal tergites IX and X clearly recognizable individually; sternite IX with basal corners somewhat squared (Fig. 4). Aedeagus (Fig. 5) about 0.66 mm in length and 0.37 mm broad; median lobe slightly surpassing parameres apically, subparallel-sided dorso-ventrally, with apex significantly dilated in lateral aspect; parameres elongate dorso-ventrally, strongly sinuate on basal margin laterally; basal piece somewhat horseshoe-shaped, with a median notch in caudal margin.

♀: Unknown.

Etymology.

The specific epithet is derived from the old name of Sichuan (Shu), where the new species was found.

Phenology.

Males appear at least in June.